Blazegraph GPU uses acceleration for both graph query and very large scale graph analytics. Billions of edges in milliseconds.

BrightstarDB runs on Windows, Linux, MacOSX, Windows Phone, Android and iOS, with a single consistent data file format across all platforms. The core libraries have a small footprint and install with zero configuration for embedded applications.

Filament includes a fluent traversal model that makes it easy to navigate the stored graph in large chunks.

The scaling of Grapholytics is tested for more than 100 billion database objects with a data volume of more than 5 PB. Grapholytic supports Neo4Js query language “Cypher”.

While a persistent memory model designed mostly for knowledge management, AI and semantic web projects, it can also be used as an embedded object-oriented database for Java projects of all sizes. Or a graph database. Or a (non-SQL) relational database.

Native Store is accessible from most programming languages by providing APIs in C++, Java (Tinkerpop/Blueprints), and Python. Its gShell graph command collection and the Native Store REST APIs provide language-free interfaces.

Objectivity has announced that they will merge InfiniteGraph’s functionality is being migrated into their other product, ThingSpan.

It also has a built-in search engine and a full-list of enterprise features such as ACID transactions, high availability and disaster recovery, certified security, scalability and elasticity.

Neo4j is accessible from most programming languages using its built-in REST web API interface, as well as a proprietary Bolt protocol with official drivers.

• GraphDB Free is a database engine for small projects. Its only limitation is that it can handle no more than two queries in parallel.
• GraphDB Standard is a robust standalone database engine, able to manage tens of billions of semantic triples on one commodity server. RDF statements can be loaded and queried at scale simultaneously.
• GraphDB Enterprise is a clustered version which offers horizontal scalability and failover support and other enterprise features.

There is also a Database-as-a-Service (DBaaS) option and a cloud option.

OpenCog AtomSpace is a knowledge representation (KR) database and the associated query/reasoning engine to fetch and manipulate that data, and perform reasoning on it. Data is represented in the form of graphs, and more generally, as hypergraphs

The Open Query GRAPH computation engine, or OQGRAPH as the engine itself is called, allows you to handle hierarchies (tree structures) and complex graphs (nodes having many connections in several directions).

Simple data model using key-value pairs with secondary indexes. Includes ACID transactions, tabular data models, and JSON support. Integrated with Oracle Database, Oracle Wallet, and Hadoop.

Oracle Spatial and Graph supports a full range of geospatial data and analytics for land management and GIS, mobile location services, sales territory management, transportation, LiDAR analysis and location-enabled Business Intelligence.

The graph features include RDF graphs for applications ranging from semantic data integration to social network analysis to linked open data and network graphs used in transportation, utilities, energy and telcos and drive-time analysis for sales and marketing applications.

There is a Community Edition which is free for any use (Apache 2 license).

There is also an Enterprise Edition which includes additional features such as Query Profiler, Distributed Clustering configuration, Metrics recording, and Live Monitor with configurable Alerts.

Orly has its own high-level, compiled, type-safe, functional language called Orlyscript.

Profium Sense constantly monitors and gathers data from heterogeneous sources such as news feeds, CRM, IoT, Open and Big Data. The data then becomes interlinked with the help of semantic technologies and robust Artificial Intelligence algorithms. This approach gives real-time access to the data and allows users to make smarter decisions and create new information.

SPARQLVerse from SPARQLCity, is an in memory MPP analytic #graphdb using #SPARQL with analytic extensions including Windowed Aggregate functions.

Sparksee offers bindings for Java, C++, C#, Python and Objective-C. Sparksee 5 mobile was the first graph database for mobile devices. Supported platforms: Linux, Windows, MacOSX, iOS, and Android.

Sqrrl is a security analytics company. Sqrrl’s platform is designed to enable security analysts to discover threats faster.

It provides ultra-fast navigation and pathfinding queries against huge distributed graphs. ThingSpan also supports parallel pattern-finding and predictive analytics in combination with Spark components, such as MLlib, GraphX, and Spark SQL.

Titan is a transactional database that can support thousands of concurrent users executing complex graph traversals in real time.

Support for ACID and eventual consistency.

There is no server process. Data is read and written directly from/to shared memory, no sockets are used between WhiteDB and the application program.